Have you considered "dark matter"? ... another interesting factor in light of what is written in Gen 1.
Also consider 1 Thess 5 where we are told we are children of light and children of the day ... not of the night or of darkness.
1 Thessalonians 5:
5 Ye are all the children of light, and the children of the day: we are not of the night, nor of darkness.
6 Therefore let us not sleep, as do others; but let us watch and be sober.
7 For they that sleep sleep in the night; and they that be drunken are drunken in the night.
8 But let us, who are of the day, be sober, putting on the breastplate of faith and love; and for an helmet, the hope of salvation.